Influence of photon recycling on lifetime and diffusion coefficient in GaAs

Abstract

The continuity equation of minority carriers is solved with the inclusion of photon recycling. A new development technique is used to provide a simple evaluation of effective lifetime and diffusion coefficients. Results are found to be in agreement with already published methods in a wide range of sample geometries. This provides a reliable determination method for radiative and nonradiative lifetimes through a single time-resolved photoluminescence experiment on GaAs structures such as solar cells.